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Main Cloud Types
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Other Clouds
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Optical Effects
- 22° Halo
- 46° Halo
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- Circumzenithal Arc
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- Parry antisolar arcs
- Parry arc
- Parry infralateral arc
- Parry supralateral arc
- Rainbow
- Sub parhelion
- Sub-sun
- Suncave parry arc
- Sun dog (Parhelion)
- Sun pillar
- Supernumerary bows
- Subparhelic circle
- Supralateral arc
- Upper tangent arc
- Wegener arc
Moisture from the remnants of a Pacific Basin tropical cyclone crossing into Las Cruces, New Mexico, US
The edge of a storm system near Sumirago, Varese, Italy
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With an ode to Joni Mitchell and 'Both Sides Now', William spotted these developing cumulonimbi near Salisbury, England
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The beginning, or the end, of a rainbow, visible amidst a swirl of clouds over North Dundas Township, Ontario, Canada
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Monsoon storm clouds at sunset over Tucson, Arizona, US
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Pileus are small, horizontal clouds that form above cumulus or cumulonimbus clouds, due to rising air that condenses into a smooth shape upon reaching its dew point, and this formation is usually an indicator of severe weather. This classic example was spotted over Bethesda, Maryland, US.
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A developing storm in the distance, spotted near Lynwood, Washington, US
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Virga at sunset over Winthrop, Washington, US
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A developing storm over the Atlantic Ocean, spotted from Kitty Hawk, North Carolina, US
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A turbulent storm system spotted by Frano Mika near Rijeka, Croatia
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A developing thunderstorm at sunset, upon which Edward saw a frightening monster standing, with eyes and a nose, powerful arms and fists, and a belt, spotted over Vermontville, Adirondacks, New York, US
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A robust cumulonimbus visually highlighted by the contrast of colour in the sky, spotted over the Picentini Mountains, Italy
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A contrast in the sky over Kirkkonummi, Finland
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Rainbow over Schlossborn, Taunus, Germany
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The pathway of lightning clearly marked in the evening sky over Arlington, Virginia, US
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Cumulonimbus over Rotterdam, Netherlands
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